Airbag control unit with part number 77960-S9A-A222-M1

What does the airbag control unit 77960-S9A-A222-M1 do?

The airbag control unit 77960-S9A-A222-M1 processes the signals from the crash sensors for Honda. In an accident it decides within milliseconds which airbags and seatbelt pretensioners are triggered, and faults are reported via the airbag warning light.

During operation it monitors the system continuously, that is, sensors, airbags and seatbelt pretensioners. If it stores crash data after an accident, it locks itself; this lock ends only with a repair.

Why does the control unit 77960-S9A-A222-M1 fail?

A main trigger is crash data from an accident that remains in the unit even without a triggered airbag; a standard diagnostic tool cannot erase it. Further causes are ageing of the electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data stored in the memory is removed by Airbag24 during the repair. That a diagnostic tool cannot clear it is due to the storage within the control unit itself.

The further triggers concern the electronics or their connections. Moisture and corrosion at the plugs, cold solder joints, and voltage spikes from a weak battery or a jump start belong to these.

How can you tell that the 77960-S9A-A222-M1 is defective?

A defect in the 77960-S9A-A222-M1 can be recognised by the airbag warning light in the instrument cluster, which lights up permanently or intermittently. Typical signs are also error messages, a diagnostic tool without connection and a fault memory that cannot be cleared. In that case, the airbags and seatbelt pretensioners may not trigger in an emergency.

Typical signs are:

• airbag warning light lights up permanently or intermittently
• error message in the instrument cluster
• diagnostic tool gets no connection to the control unit
• fault memory cannot be cleared

Any one of these signs justifies an inspection of the system.

Which vehicles is the 77960-S9A-A222-M1 fitted in?

The airbag control unit 77960-S9A-A222-M1 is fitted in these vehicles: Honda CR-V 2 RD (2001-2006).

The overview refers to Honda and shows the vehicles in which the part number is fitted.

• Honda CR-V 2 RD (2001-2006)

Comparing the part number on the label of the removed unit with this page shows whether it is the right unit. Have the fault memory read out beforehand as well; this clarifies whether the control unit itself or a connector or cable is affected.

For the same vehicles, we also repair control units with the part numbers 77960-S9A-A924-M1, 77960-SWA-G214-M4.

How does the repair of the 77960-S9A-A222-M1 work?

You have the fault memory read out first and enclose the log. Then you disconnect the battery and only afterwards remove the control unit 77960-S9A-A222-M1. Then you create the repair order online and send the unit in well packed.

The inspection at Airbag24 covers examining the unit, replacing defective components, erasing the crash data and a final function test. For this, Airbag24 usually plans 3–4 working days.

Afterwards, your own unit returns to you. Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit 77960-S9A-A222-M1 get to Airbag24?

You send the control unit 77960-S9A-A222-M1 to Airbag24 as a parcel or have it collected by UPS for an extra charge. The return after the repair is also made by UPS.

Print the repair order and enclose it in the parcel. A correspondingly large box with padding protects the unit.